For a steel alloy it has been determined that a carburizing heat treatment of 10.1 h duration will raise the carbon concentration to 0.38 wt% at a point 2.1 mm from the surface. estimate the time necessary to achieve the same concentration at a 6.5 mm position for an identical steel and at the same carburizing temperature.

What is the function of the commutator in a dc motor? a. to spin the magnet b. to change direct current into alternating current c. to change alternating current into direct current d. to spin the wire coil

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.